Does anyone own a rem. model 7600 pump.... when cleaning my gun i noticed solid copper coloredstriped going down into my barrel.....is this a normal barrle for this model, or is this copper build up....what should i do about it if it is?

It'a not normal, sounds like copper fouling.

I use Sweets or Barnes CR-10 copper remover and they work great. I like the Sweets better because it is thicker. There are some new foaming copper cleaners now that are suppose to be good at removing copper with less work. I havent tried any but I plan to.

got it........is this affecting my shooting patterns as of right now

Yes it could be if it is really bad. I had a winchester model 70 in .270 winchester and it started shooting poorly so I bought some Sweets and cleaned it and my groups shrank tremendously. A clean barrel is almost always the best for good groups. Some barrels like to be fouled for accuracy, but most dont. I would use the copper remover first then see what the rifle does. If this doesnt help it might be the ammunition. Try several brands then see what shoots best. A person should never leave copper fouling in the barrel for a long time because it can actually start a corrosion process that can damage your barrel. Have you ever looked down a dirty barrel on a used rifle at some gunshops and seen blue in the barrel. This is the copper starting to corrode.

I don't know is it? Meaning have you noticed a decline in accuracy?

Personally I would use a dedicated copper remover in any regards, b/c as mentioned leaving it can cause problems down the road. First off I would use a normal solvent (like shooters choice, hoppe's, etc) this will remove the powder,lead, etcrisdue. Then run a CR solvent such as CR10 or Sweets 7.62. Once you have completed the CR stage (meaning your not pulling patchs with blue on them any longer), run a saturated patch with light gun oil or isopropyl alcoholon it to remove any remain CR solvent (if left in the bore for extended periods it can also attack the steel) andfollow that with a dry patch. Finally run a patch with light gun oil to protect the bore. Before shooting it, run a dry patch to ensure no excess oil remains in the bore. A trick to remind yourself is tie a rag on the rifle.

Thanks allot, i used a foaming bore cleaner and it worked great. I got all the foam out of the barrel and ran rem oil through it multiple times, but now im scared there might still be some in there hidden and its gunna ruin my gun ? ? ?